Sara Robinson, one of my favorite bloggers, had a really fantastic post at the CAF blog about why we have responsible government to thank for the relative lack of damage to the 5.4 earthquake that hit Southern California yesterday.
The fact that Los Angeles returned to normal (as if anything in Los Angeles can ever be considered normal) within just a few hours is one of those invisible but important lessons in the collective power of a functioning government -- the kind of non-controvertible, essential fact that conservatives tend to gloss right over when they talk about shrinking government until they can drown it in a bathtub.
California's seismic codes are serious, strict, and effective. The state has been working on them for 80 years now, refining them through the years after every major quake to incorporate new knowledge and engineering practices. (A major revision this year has recently sent all the state's architects, engineers, and contractors back to school yet again.) To see the results of this ongoing effort, consider the 1931 Long Beach quake, a 6.4 shaker that damn near flattened Long Beach, killed 120 people, and caused over $40 million (in 1931 dollars) in property damage. And then reflect on the fact that in 1989, it took a quake eleven times bigger -- the 7.1 Loma Prieta quake -- to create a comparable amount of damage.
That's how effective the improvements have been. These days, most new structures are hardened to the point that you'd need at least a 7.0 (well over 10 times the size of today's quake) before things seriously started shaking apart. In many parts of the planet, a 5.8 quake would be enough to level towns, collapse bridges, and take out decades' worth of infrastructure. In LA and SF, all that happens is a few people lose their phones and power for a few hours.
It really is remarkable what serious attention to building codes has done. Not too long ago yesterday's earthquake would have been a disaster - today it's a blip. California has recognized the problem, taken steps to constantly improve and innovate, and made sure that the regulations stayed stringent, so that developers would just have to find other means to reduce costs. The fact that the epicenter was around Chino Hills and Diamond Bar, relatively new areas with new buildings that were constructed according to the strictest building codes, was only a further testament to that. The after-action reports from the 1989 San Francisco quake and the 1994 Northridge quake were taken seriously and applied in this case.
Diane at Cab Drollery has more:
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